There have been a number of queries & comments about realistic...

There have been a number of queries & comments about realistic expectations for use of 3DM printed models created from scans. IMPO this is a game changer which can lead to medicos finding their own uses for 3D models once they have access to the technology

For example, 3D Medical utilise two main 3D printing processes, one of which already appears to complement existing pre-surgical planning practises ( http://3dmedical.com.au/products/3d-printing/ )
"...The other key system produces parts in a hard nylon polymer, commonly used by orthopaedic surgeons in pre-surgical planning. This material is hard, can be cut and drilled into. Plates and brackets can be tested and surgeons can carefully plan bone breaks and screw placement prior to surgery..."